DESIGN AND CONSTN OF TWO NOS MAJ PMT BR OF SPAN 75 MTR OVER ISHURI NALLAH AT KM 172.75 AND 120 MTR (60X2)OVER DEVOSARA-II RIVER AT KM 178.87 WITH STEEL SUPERSTRUCTURE (THROUGH TYPE)ON WELL FDN INCL BOTH SIDE APPROACH RD FOR TWO BR ON RD LDP 71RCC/24

Amount

PART-I (BRIDGE PROPER ISHURI NALLAH AT KM 172.750)

Design including proof checking and construction of 75.00 mtr Single span Major Pmt bridge with Steel Truss Superstructure (Through type) on well foundation over Ishuri Nallah at Km 172.750 on Lawngtlai-Diltlang-Parva Road under 71RCC / 24BRTF Project Pushpak in Mizoram State with span arrangement as per NIT Drg and based on hydraulic data, sub soil data, Special conditions, Particular specifications of the tender document. Construction works includes all preparatory work, Erection of staging/shuttering, abutments, return wall, placing of bearings, Fabrication and erection of steel truss (through type) superstructure, wearing coat having nonskid surface in uniform thickness, strip seal expansion joints, foot paths, kerbs, RCC hand rails, RCC Crash barrier, drainage spout, approach slab protective works, temporary river training works and diversion and all other items of works required for the completion of the bridge including curing and load testing.

PART-II (BRIDGE PROPER DEVOSARA-II RIVER AT KM 178.870)

Design including proof checking and construction of 120.00 mtr Two span Major Pmt bridge with Steel Truss Superstructure (Through type) on well foundation over Devosara-II River at Km 178.870 on Lawngtlai-Diltlang-Parva Road under 71RCC / 24BRTF Project Pushpak in Mizoram State with span arrangement as per NIT Drg and based on hydraulic data, sub soil data, Special conditions, Particular specifications of the tender document. Construction works includes all preparatory work, Erection of staging/shuttering, abutments, return wall, placing of bearings, Fabrication and erection of steel truss (through type) superstructure, wearing coat having nonskid surface in uniform thickness, strip seal expansion joints, foot paths, kerbs, RCC hand rails, RCC Crash barrier, drainage spout, approach slab protective works, temporary river training works and diversion and all other items of works required for the completion of the bridge including curing and load testing

PART-III (APPROACHES TO ISHURI NALLAH AT KM 172.750)

Jungle clearance including cutting down trees not exceeding 30 cm girth measured at 1 meter above ground level and clearing away shrubs brushwood undergrowth and grubbing up roots in areas having annual rainfall more than 200 cm.

Rough excavation in soil/soil mixed with boulders getting out and disposing all excavated materials lead upto 2 m and upto 1.5 m deep (75% machine and 25% manual labour).

Earthwork in embankment by filling with earth free from roots etc. spreading in layers not exceeding 30 cm including watering and finishing to required slope & level not exceeding 1.5 m high above the base in ordinary soil in hill roads where cut & fill method is adopted.

For every additional 1.5 m lift or part thereof beyond the intitial lift of 1.5 m in ordinary soil (1.5 m to 3.0 m)

For every additional 1.5 m lift or part thereof beyond the intitial lift of 1.5 m in ordinary soil (3.0 m to 4.5 m)

For every additional 1.5 m lift or part thereof beyond the intitial lift of 1.5 m in ordinary soil (4.5m to 6.0 m)

Excavation in trenches not exceeding 1.2 m width and 1.5 m depth in soil/soil mixed with boulders (SMB), including dressing bottom and sides getting out and disposing all excavated material lead upto 6 m and lift upto 1.5 m. (by manual means)

Hard core comprising of broken metal size 5 cm graded downwards spread in layers not exceeding 15 cm including watering/ramming and finishing to required level and gradient including cost of stone metal

Plain cement concrete 1:4:8 (1 cement: 4 sand: 8 stone aggregate of size 4cm graded downwards) in foundation or elsewhere (excluding the cost of centering/shuttering).

Plain cement concrete 1:3:6 (1 cement: 3 sand: 6 stone aggregate of size 4cm graded downwards) in foundation or elsewhere (excluding the cost of centering/shuttering).

Plain cement concrete 1:2:4 (1cement: 2 coarse sand: 4 stone aggregate size 4cm graded downwards) in foundation or elsewhere (excluding the cost of centering/shuttering).

Reinforced cement concrete 1:2:4 (1cement: 2 coarse sand: 4 stone aggregate gauge 2cm graded downwards) in foundation or elsewhere (excluding the cost of centering/shuttering).

Reinforced cement concrete M-35 (excluding the cost of centering/shuttering) in Approach slab

Centring/Shuttering (Steel) including strutting, proppingand removal of form work (Considering 10 times to be used)

Laying reinfoprcement including cutting, bending binding providing hooks overlaps etc bars upto 12 mm (labour only)

Random/Polygonal rubble walling in Cement mortar (1:6) brought to course 45 cm heigh, well bonded with through/bond stones evenly spaced @ 2 Nos per sqm of wall face

Flush pointing on stone work with cement mortar (1 cement : 3 sand)

White washing 2 coats prepared by slaking freshly burnt Class ‘C’ limeconforming to IS 712-1964 the qty of gum to be used shall be @ 4 kg/cum of cream

Providing & laying of weep holes of size 4” x 4” x 1mtr using PVC pipe4” dia with PCC 1:4:8

Cost of steel

Preparation of sub-grade in SMB by excavating upto 20 cm average depth, dressing excavated earth to required camber or super elevation and consolidating with power roller including watering & disposal of surplus earth within a lead of 30 Mtr.

GSB 15 cm thick (compacted ) with stone aggregate conforming to grading No 1 as per Tables-400-1 of MORT&H specifications for Road and Bridge Works including supply of material, watering and compaction all complete.

WBM 75 mm consolidated thickness of stone metal size 63 mm to 45 mm, grading No 1, as per Table-400-9 with type ‘A’ screening as per Table 400-10 and satisfying the physical requirement as per Table-400-8 of MORT&H specifications, spread, rolled, hollow made up to form true surface blinded and compacted to gradient and camber required all as specified.

Providing and applying primer coat with bitumen emulsion on prepared surface of granular base including clearing of road surface and spraying primer @ 7.50 Kg per 10 Sqm. (using BPD with manual labour)

Providing and applying tack coat with bitumen emulsion pressure distributor @ 2.5 Kg/10 Sqm on prepared bituminous/granular surface cleaned with mechanical broom, all complete as per clause 503 of MoSRT&H specifications.

Preparing of WBM surface including scrubbing, cleaning, laying and consolidating pre-coated stone chips 0.343 cum of stone chips (13.2 mm - 0.229 cum-passing 22.4 mm sieve and retained on 11.2 mm sieve and 11.2 mm-0.114 cum-passing 13.2 mm sieve and retained on 5.6 mm sieve) mixed with 18.65 Kg of binder (VG-30 grade), applying a premixed sand seal coat 0.06 cum sand (passing 2.36 mm and retained on 180 micron sieve) with binder VG-30 6.83Kg/10sqm and rolling complete as specified, total consolidated thickness 2.5 cm (using tar boiler mixing and spreading with manual labour)

PART-IV (APPROACHES TO DEVOSARA-II RIVER AT KM 178.870)

Jungle clearance including cutting down trees not exceeding 30 cm girth measured at 1 meter above ground level and clearing away shrubs brushwood undergrowth and grubbing up roots in areas having annual rainfall more than 200 cm.

Rough excavation in soil/soil mixed with boulders getting out and disposing all excavated materials lead upto 2 m and upto 1.5 m deep (75% machine and 25% manual labour).

Earthwork in embankment by filling with earth free from roots etc. spreading in layers not exceeding 30 cm including watering and finishing to required slope & level not exceeding 1.5 m high above the base in ordinary soil in hill roads where cut & fill method is adopted.

For every additional 1.5 m lift or part thereof beyond the intitial lift of 1.5 m in ordinary soil (1.5 m to 3.0 m)

For every additional 1.5 m lift or part thereof beyond the intitial lift of 1.5 m in ordinary soil (3.0 m to 4.5 m)

For every additional 1.5 m lift or part thereof beyond the intitial lift of 1.5 m in ordinary soil (4.5m to 6.0 m)

For every additional 1.5 m lift or part thereof beyond the intitial lift of 1.5 m in ordinary soil (6.0m to 7.5 m)

Excavation in trenches not exceeding 1.2 m width and 1.5 m depth in soil/soil mixed with boulders (SMB), including dressing bottom and sides getting out and disposing all excavated material lead upto 6 m and lift upto 1.5 m. (by manual means)

Hard core comprising of broken metal size 5 cm graded downwards spread in layers not exceeding 15 cm including watering/ramming and finishing to required level and gradient including cost of stone metal

Plain cement concrete 1:4:8 (1 cement: 4 sand: 8 stone aggregate of size 4cm graded downwards) in foundation or elsewhere (excluding the cost of centering/shuttering).

Plain cement concrete 1:3:6 (1 cement: 3 sand: 6 stone aggregate of size 4cm graded downwards) in foundation or elsewhere (excluding the cost of centering/shuttering).

Plain cement concrete 1:2:4 (1cement: 2 coarse sand: 4 stone aggregate size 4cm graded downwards) in foundation or elsewhere (excluding the cost of centering/shuttering).

Reinforced cement concrete 1:2:4 (1cement: 2 coarse sand: 4 stone aggregate gauge 2cm graded downwards) in foundation or elsewhere (excluding the cost of centering/shuttering).

Reinforced cement concrete M-35 (excluding the cost of centering/shuttering) in Approach slab

Centring/Shuttering (Steel) including strutting, proppingand removal of form work (Considering 10 times to be used)

Laying reinfoprcement including cutting, bending binding providing hooks overlaps etc bars upto 12 mm (labour only)

Random/Polygonal rubble walling in Cement mortar (1:6) brought to course 45 cm heigh, well bonded with through/bond stones evenly spaced @ 2 Nos per sqm of wall face

Earth filling free from roots etc behind retainining, breast walls etc

Flush pointing on stone work with cement mortar (1 cement : 3 sand)

White washing 2 coats prepared by slaking freshly burnt Class ‘C’ limeconforming to IS 712-1964 the qty of gum to be used shall be @ 4 kg/cum of cream

Providing & laying of weep holes of size 4” x 4” x 1mtr using PVC pipe4” dia with PCC 1:4:8

Cost of steel

Preparation of sub-grade in SMB by excavating upto 20 cm average depth, dressing excavated earth to required camber or super elevation and consolidating with power roller including watering & disposal of surplus earth within a lead of 30 Mtr.

GSB 15 cm thick (compacted ) with stone aggregate conforming to grading No 1 as per Tables-400-1 of MORT&H specifications for Road and Bridge Works including supply of material, watering and compaction all complete.

WBM 75 mm consolidated thickness of stone metal size 63 mm to 45 mm, grading No 1, as per Table-400-9 with type ‘A’ screening as per Table 400-10 and satisfying the physical requirement as per Table-400-8 of MORT&H specifications, spread, rolled, hollow made up to form true surface blinded and compacted to gradient and camber required all as specified.

Providing and applying primer coat with bitumen emulsion on prepared surface of granular base including clearing of road surface and spraying primer @ 7.50 Kg per 10 Sqm. (using BPD with manual labour)

Providing and applying tack coat with bitumen emulsion pressure distributor @ 2.5 Kg/10 Sqm on prepared bituminous/granular surface cleaned with mechanical broom, all complete as per clause 503 of MoSRT&H specifications.

Preparing of WBM surface including scrubbing, cleaning, laying and consolidating pre-coated stone chips 0.343 cum of stone chips (13.2 mm - 0.229 cum-passing 22.4 mm sieve and retained on 11.2 mm sieve and 11.2 mm-0.114 cum-passing 13.2 mm sieve and retained on 5.6 mm sieve) mixed with 18.65 Kg of binder (VG-30 grade), applying a premixed sand seal coat 0.06 cum sand (passing 2.36 mm and retained on 180 micron sieve) with binder VG-30 6.83Kg/10sqm and rolling complete as specified, total consolidated thickness 2.5 cm (using tar boiler mixing and spreading with manual labour)